#include <stdio.h>
struct st{
    int src;
    int main_bs;
};


#define __poffset(m) printf("%36s, 0x%x\n", #m, ((unsigned int)(&ch_param1.##m) - (unsigned int)(&ch_param1)))
#define __poffset1(m) printf("%d\n", &m)



int main()
{
    struct st ch_param1 = {1,2};
    __poffset1(main_bs);
    printf("%d\n", ch_param1.main_bs);


    return 0;
}

